Tiga spesies ikan kebarau/hampala di Indonesia: Hampala bimaculata, Popta 1905 (atas); Hampala macrolepidota, Kuhl & Hasselt 1823 (tengah); dan Hampala ampalong, Bleeker 1852 (bawah).
Sabtu, 19 Juli 2025
Jumat, 06 Juni 2025
Ovarian development of Notopterus notopterus (Pallas, 1769) injected with human chorionic gonadotropin
Abstract.
The bronze featherback, Notopterus
notopterus (Pallas, 1769), is a wild
species that has not been domesticated. Wild species reared in aquaculture
tanks tend to experience disturbances in their reproductive systems. The
purpose of this study was to determine changes in the development of N.
notopterus ovaries after being injected with human chorionic
gonadotropin (hCG). This study was a laboratory experiment. The experiment used
a completely randomized design with four treatments and three replications of
hCG dosage (0, 150, 200, and 250 IU kg-1 of fish).
Administration of hCG was through intramuscular injection. Each fish was
injected only once. On the 7th and 14th days after injection, blood was
collected from N. notopterus, and then the fish were dissected for
liver and ovary collection. The results showed that the administration of
hCG stimulated the development of N. notopterus ovaries. The
stage of ovarian maturity in N. notopterus increased. This is
the first study to induce ovarian maturation in N. notopterus using
hCG. The results of this study provide valuable information for future
studies on the breeding programs of N. notopterus.
Key
Words: fish
reproduction, Notopteridae, oocyte diameter, ovary maturation, ovisomatic index.
How to cite this article:
Muslim M., Syaifudin M., Taqwa F. H., Nabilah F., 2025 Ovarian development of Notopterus notopterus (Pallas, 1769) injected with human chorionic gonadotropin. AACL Bioflux 18(3):1361-1369.
Kamis, 05 Juni 2025
Effects of Purwoceng Plant (Pimpinella alpine) Extract on Masculinization of Guppy (Poecilia reticulata)
ABSTRACT
In the context of guppies (Poecilia reticulata), male fish are considered
more attractive and valuable. The majority of mono-sex production in male fish
employs the use of 17α-methyltestosterone, an expensive hormone with limited
supply. It is therefore necessary to explore the potential of natural
ingredients as an alternative replacement, such as purwoceng (Pimpinella alpina). The objective of
this study was to determine the optimal immersion duration for the
masculinization of P. reticulata. This study employed a completely randomized
design with four treatments of immersion duration (0, 8, 10, and 12 hours),
with three replications allocated to each treatment. Following immersion, the
guppy larvae were reared for a period of 45 days and fed with Daphnia, sp and Artemia cysts. The sex of each fish was determined via surgical
procedure at the conclusion of the larval rearing period. The findings revealed
that the duration of larval immersion in P. alpina extract had a notable impact (P
< 0.05) on the proportion of male fish. In this study, the 10-hour immersion
treatment yielded the highest number of male P. reticulata, at 83.33%. The results of this
study are highly valuable for the application of sex reversal techniques using
phytosterol as a replacement for synthetic hormones.
Journal
of Applied Biology & Biotechnology
Acceptance - (JABB-2024-07-516)
Rabu, 14 Mei 2025
Length-weight Relationship, Condition Factors, and Reproductive Biology of Kissing Gourami (Helostoma temminckii) from Celikah Swamp, Ogan Komering Ilir
Abstract
Kissing gourami (Helostoma temminckii) is one of freshwater fish species that has a high economic value in Indonesia. This study aims to assess the length-weight relationship, condition factors and reproductive biology of H. temminckii from Celikah floodplain, Ogan Komering Ilir Regency, Indonesia. This study was conducted from July to September 2024 (dry season). The sampling site was determined using purposive sampling technique based on the catch area of local fishermen. A total of 64 H. temminckii samples were used in this study. Measurements of total fish length, weight, and fish dissection were conducted at the Fisheries Laboratory of the Universitas Islam Ogan Komering Ilir Kayuagung. The results showed that the total length of the fish obtained ranged from 12.2 cm to 17 cm, and the weight ranged from 34.1 g to 96.6 g. Most total lengths ranged from 12.1 to 13 cm (30.4%), and least from 16.1 to 70 cm (4.6%). Fish weights ranged mostly from 40 to 50 g (34.9%) and least from 90 to 100 g (1.6%). The length-weight relationship analysis showed that the a-value was 0.0389, the b-value was 2.631, and the R2-value was 0.3669. The growth pattern of H. temminckii in this study is negative allometric. The sex ratio in this study was 1:3.7, with 14 males (21.2%) and 52 females (78.8%).
Fulltext: https://journalijsra.com/sites/default/files/fulltext_pdf/IJSRA-2025-0251.pdf
Selasa, 18 Maret 2025
Morphometric-meristic characters of Sumatran featherback (Chitala hypselonotus, Bleeker 1852) from Kelekar River, South Sumatra, Indonesia
Abstract
The Sumatran featherback (Chitala hypselonotus, Bleeker 1852) is an endemic freshwater fish species native to the island of Sumatra in Indonesia. The objective of this study was to measure and calculate the morphometric-meristic characters of C. hypselonotus. The study utilized a total of ten specimens, collected between July and September 2024, from the Kelekar River in Indonesia. The morphometric and meristic characters of C. hypselonotus were measured at the Fisheries Laboratory, Department of Fisheries, Faculty of Agriculture, Universitas Sriwijaya, Indonesia. The results demonstrated that the total length of C. hypselonotus samples ranged from 340 to 500 cm, with a standard length ranging from 310 to 470 cm. Additionally, the body weight of the specimens ranged from 276 to 1066 g, with a proportion of standard length to total length of 94.16% and a head length to standard length ratio of 21.28%. The number of rays on the dorsal fin is 9 (D. 9), the pectoral fin has between 12 and 15 rays (P. 12-15), the ventral fin has between 2 and 3 rays (V. 2-3), and the anal fin is fused to the caudal fin, with a range of 118 to 131 rays (A-C. 118-131). The findings of our present study may prove useful to students, fisheries biologists, and taxonomists in the future, facilitating the correct identification and classification of C. hypselonotus. It is recommended that further studies be conducted on the morphometric-meristic and other biometric parameters of the threatened and commercially important fish C. hypselonotus, to enable the management and conservation of populations in natural water bodies.
Keywords: Chitala hypselonotus, condition factor, endemic species, morphometric, meristic character
DOI: https://www.doi.org/10.22271/fish.2025.v13.i2a.3044
Full text: https://www.fisheriesjournal.com/archives/2025/vol13issue2/PartA/13-2-3-164.pdf
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